AC-13306::Adobe Commerce 2.4.8 core code is compatible with PHP 8.4

Author: djadobe16

app/code/Magento/BundleSampleData/Setup/Installer.php

@@ -32,7 +32,7 @@ class Installer implements Setup\SampleData\InstallerInterface
      */
     public function __construct(
         \Magento\BundleSampleData\Model\Product $bundleProduct,
-        StoreManagerInterface $storeManager = null
+        ?StoreManagerInterface $storeManager = null
     ) {
         $this->bundleProduct = $bundleProduct;
         $this->storeManager = $storeManager ?: \Magento\Framework\App\ObjectManager::getInstance()

app/code/Magento/CatalogRuleSampleData/Model/Rule.php

@@ -72,7 +72,7 @@ public function __construct(
         \Magento\Catalog\Model\ResourceModel\Category\CollectionFactory $categoryCollectionFactory,
         \Magento\Customer\Model\GroupFactory $groupFactory,
         \Magento\Store\Model\WebsiteFactory $websiteFactory,
-        Json $serializer = null
+        ?Json $serializer = null
     ) {
         $this->fixtureManager = $sampleDataContext->getFixtureManager();
         $this->csvReader = $sampleDataContext->getCsvReader();

app/code/Magento/DownloadableSampleData/Model/Product/Converter.php

@@ -32,8 +32,8 @@ public function __construct(
         \Magento\Catalog\Model\ResourceModel\Product\Attribute\CollectionFactory $attributeCollectionFactory,
         \Magento\Eav\Model\ResourceModel\Entity\Attribute\Option\CollectionFactory $attrOptionCollectionFactory,
         \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productCollectionFactory,
-        \Magento\Downloadable\Api\Data\File\ContentInterfaceFactory $fileContentFactory = null,
-        Filesystem $filesystem = null
+        ?\Magento\Downloadable\Api\Data\File\ContentInterfaceFactory $fileContentFactory = null,
+        ?Filesystem $filesystem = null
     ) {
         parent::__construct(
             $categoryTreeFactory,

app/code/Magento/DownloadableSampleData/Setup/Installer.php

@@ -44,7 +44,7 @@ public function __construct(
         Category $category,
         Attribute $attribute,
         Product $product,
-        StoreManagerInterface $storeManager = null
+        ?StoreManagerInterface $storeManager = null
     ) {
         $this->category = $category;
         $this->attribute = $attribute;

app/code/Magento/GroupedProductSampleData/Setup/Installer.php

@@ -29,7 +29,7 @@ class Installer implements Setup\SampleData\InstallerInterface
      */
     public function __construct(
         \Magento\GroupedProductSampleData\Model\Product $groupedProduct,
-        StoreManagerInterface $storeManager = null
+        ?StoreManagerInterface $storeManager = null
     ) {
         $this->groupedProduct = $groupedProduct;
         $this->storeManager = $storeManager ?: \Magento\Framework\App\ObjectManager::getInstance()

app/code/Magento/OfflineShippingSampleData/Model/Tablerate.php

@@ -83,7 +83,7 @@ public function __construct(
         \Magento\Framework\App\Cache\TypeListInterface $cacheTypeList,
         \Magento\Framework\App\Config\Storage\WriterInterface $configWriter,
         \Magento\Store\Model\StoreManagerInterface $storeManager,
-        SystemConfig $systemConfig = null
+        ?SystemConfig $systemConfig = null
     ) {
         $this->fixtureManager = $sampleDataContext->getFixtureManager();
         $this->csvReader = $sampleDataContext->getCsvReader();

app/code/Magento/SalesSampleData/Model/Order/Converter.php

@@ -56,7 +56,7 @@ public function __construct(
         \Magento\Catalog\Model\ProductFactory $productFactory,
         \Magento\ConfigurableSampleData\Model\Product\ConverterFactory $productConverterFactory,
         \Magento\Eav\Model\Config $eavConfig,
-        Json $serializer = null
+        ?Json $serializer = null
     ) {
         $this->customerRepository = $customerAccount;
         $this->productFactory = $productFactory;

app/code/Magento/TaxSampleData/Model/Tax.php

@@ -87,7 +87,7 @@ public function __construct(
         \Magento\Tax\Model\Calculation\RateFactory $taxRateFactory,
         \Magento\Framework\Api\SearchCriteriaBuilder $criteriaBuilder,
         \Magento\Framework\Api\FilterBuilder $filterBuilder,
-        \Magento\Directory\Model\ResourceModel\Region\CollectionFactory $regionCollectionFactory = null
+        ?\Magento\Directory\Model\ResourceModel\Region\CollectionFactory $regionCollectionFactory = null
     ) {
         $this->fixtureManager = $sampleDataContext->getFixtureManager();
         $this->csvReader = $sampleDataContext->getCsvReader();

app/code/Magento/WidgetSampleData/Model/CmsBlock.php

@@ -76,8 +76,8 @@ public function __construct(
         \Magento\Cms\Model\BlockFactory $cmsBlockFactory,
         \Magento\Widget\Model\ResourceModel\Widget\Instance\CollectionFactory $appCollectionFactory,
         \Magento\Catalog\Model\ResourceModel\Category\CollectionFactory $categoryFactory,
-        Json $serializer = null,
-        State $appState = null
+        ?Json $serializer = null,
+        ?State $appState = null
     ) {
         $this->fixtureManager = $sampleDataContext->getFixtureManager();
         $this->csvReader = $sampleDataContext->getCsvReader();